Weed control in the section of crop rotation “sunflower-winter wheat-corn”

In northern zone of Krasnodar region on common black soil in the section of crop rotation sunflower-winter wheat-corn the influence of the main soil processing on tilled crops was studied in 2000-2005: the moldboard ploughing (22-24 cm), minimal (12-14), superficial (6-8 cm) and without ploughing; for winter wheat the soil pro-cessing is superficial with the use of fertilizers and herbicides. It was defined, that the highest total value of gross production – 69.7 hundr. roubles per hectare and the total notional net profit – 25.6 thous. roubles per hectare was obtained by the minimal expenditures for herbicides (14 %), by applying minimal main soil processing for sunflower and corn and superficial processing for winter wheat. As a result of the cultivation of tilled crops without fall soil processing, these indices were 62.7 hundr. rou-bles per hectare, 21.7 roubles per hectare and 17 %, respectively.